Flow dividing assembly and heating and ventilation equipment

Abstract

The utility model provides a shunting assembly and heating and ventilation equipment, the shunting assembly comprises a shell, a plate body and a first connecting pipe, an expansion cavity is defined in the shell, the expansion cavity is provided with an opening, the shell is also provided with an inflow hole communicated with the expansion cavity, the plate body seals the opening, and one side of the plate body facing the expansion cavity is provided with a plurality of shunting holes; a plurality of inserting holes are formed in the side, deviating from the expansion cavity, of the plate body and communicate with the expansion cavity through the flow dividing holes, and the hole diameter of the inserting holes is larger than that of the flow dividing holes; and the first connecting pipe is inserted into the inserting hole. The plate body forms a step structure between the inserting hole and the flow dividing hole, the first connecting pipe can be a metal pipe with large rigidity, so that the first connecting pipe is not prone to rebounding, the first connecting pipe can be inserted into the inserting hole, the peripheral wall and the end face of the first connecting pipe are both connected with the plate body, and then the connecting area of the first connecting pipe and the plate body is increased. And the connection between the first connecting pipe and the plate body is more reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of HVAC equipment, in particular to a diversion component and HVAC equipment. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] The existing heat exchanger's shunt capillary tubes are made of small-diameter copper capillaries with low rigidity and high elasticity. They are prone to rebound after being plugged into the heat exchanger, requiring manual shaping, which is time-consuming and labor-intensive. Utility Model Content

[0004] The purpose of this utility model is to at least solve the problem that the diverter capillary tubes of the diverter assembly of the existing heat exchanger are difficult to install and prone to rebound, resulting in reduced connection reliability of the diverter capillary tubes. This purpose is achieved through the following technical solutions:

[0005] The first aspect of the present invention provides a flow diversion assembly, comprising:

[0006] A shell defines an expansion cavity therein, the expansion cavity having an open opening, and the shell further comprises an inflow hole communicating with the expansion cavity;

[0007] a plate body, mounted on the housing and closing the opening, the plate body having a plurality of diversion holes on a side facing the expansion cavity, and a plurality of insertion holes on a side facing away from the expansion cavity, the insertion holes being connected to the expansion cavity through the diversion holes, the insertion holes being coaxially arranged with the diversion holes, and the diameter of the insertion holes being larger than the diameter of the diversion holes;

[0008] A first connecting tube, wherein the first end of the first connecting tube is inserted into the insertion hole, the outer peripheral wall of the first connecting tube is connected to the hole wall of the insertion hole, and the end face of the first end is connected to the portion of the plate body located between the diversion hole and the insertion hole.

[0009] The diversion assembly proposed in the first aspect of the present invention forms a step structure between the plate body and the insertion hole by setting the insertion hole on the plate body to have a hole diameter larger than the hole diameter of the diversion hole. The first connecting pipe connecting the heat exchanger can adopt a metal pipe with greater rigidity, so that the first connecting pipe is not easy to rebound, and the first connecting pipe can be inserted into the insertion hole. The peripheral wall of the first connecting pipe can be connected to the hole wall of the insertion hole, and the end face of one end of the first connecting pipe located in the insertion hole can be connected to the step structure, thereby increasing the connection area between the first connecting pipe and the plate body, making the connection between the first connecting pipe and the plate body more reliable.

[0010] In addition, the diversion assembly according to the present invention may also have the following additional technical features:

[0011] In some embodiments of the present invention, the plate body is an integrated structure.

[0012] In some embodiments of the present invention, the inner diameter of the first connecting pipe is consistent with the aperture of the diversion hole.

[0013] In some embodiments of the present invention, the difference between the diameter of the insertion hole and the diameter of the diversion hole is H, and the wall thickness of the first connecting pipe is M, wherein H>2M.

[0014] In some embodiments of the present invention, the expansion chamber is a rotating body structure, and along the axial direction of the expansion chamber, the cross-section of the expansion chamber is hemispherical, and along the flow direction of the inflow hole, the diameter of the expansion chamber gradually increases.

[0015] In some embodiments of the present invention, a mounting groove is provided at the outer edge of the plate body facing the expansion cavity, the mounting groove is arranged around the axis of the inflow hole, and the end of the shell facing away from the inflow hole is installed in the mounting groove.

[0016] In some embodiments of the present invention, along the flow direction of the inflow hole, the ratio of the length of the mounting groove to the aperture of the diversion hole is greater than 0.5.

[0017] In some embodiments of the present invention, the expansion chamber has an open end that is truncated in a cone shape, and along the flow direction of the inflow hole, the diameter of the expansion chamber has an open end that gradually increases, and the plate body is embedded in the opening and adapted to the shape of the expansion chamber.

[0018] In some embodiments of the present invention, the axial direction of the diverter hole is set at an angle to the axial direction of the inflow hole, and along the flow direction of the diverter hole, the axial direction of the diverter hole is inclined away from the axis of the inflow hole.

[0019] In some embodiments of the present invention, the plate body includes a first plate body and a second plate body arranged opposite to each other, the first plate body is arranged in the expansion cavity, the second plate body is connected to the shell and closes the opening, the first plate body is provided with a plurality of the diversion holes, the second plate body is provided with a plurality of insertion holes, and the end face of the first end is connected to the plate surface of the second plate body on the side facing away from the expansion cavity.

[0020] In some embodiments of the present invention, the diverter assembly also includes a diverter cone, the large diameter end of the diverter cone is connected to the plate body, the small diameter end of the diverter cone is arranged in the expansion cavity, the diverter cone is coaxially arranged with the inflow hole, and along the axial direction of the inflow hole, the distance between the small diameter end of the diverter cone and the inflow hole is L1, the aperture of the inflow hole is D, and the ratio of L1 to D ranges from 0 to 5.

[0021] The second aspect of the present invention provides a HVAC device, comprising the diversion assembly provided in the first aspect of the present invention.

[0022] The HVAC equipment proposed in the second aspect of the present invention connects the heat exchanger and the diversion assembly through a first connecting pipe. The first connecting pipe is reliably connected to the plate body of the distributor. The aperture of the insertion hole on the plate body is larger than the aperture of the diversion hole, so that the plate body forms a step structure between the insertion hole and the diversion hole. The first connecting pipe connecting the heat exchanger can adopt a metal pipe with greater rigidity, so that the first connecting pipe is not easy to rebound, and the first connecting pipe can be inserted into the insertion hole. The surrounding wall of the first connecting pipe can be connected to the hole wall of the insertion hole, and the end face of one end of the first connecting pipe located in the insertion hole can be connected to the step structure, thereby increasing the connection area between the first connecting pipe and the plate body, making the connection between the first connecting pipe and the plate body more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference numerals are used throughout the accompanying drawings to denote the same components. In the accompanying drawings:

[0024] Figure 1 Schematically shows a structural diagram of a flow diversion assembly according to an embodiment of the present utility model;

[0025] Figure 2 Schematically shows a partial cross-sectional view of a flow diversion assembly according to an embodiment of the present utility model;

[0026] Figure 3 The figure schematically shows the refrigerant flow structure diagram at the connection between the incoming flow pipe and the inlet pipe according to the embodiment of the present utility model;

[0027] Figure 4 Schematically shows a structural diagram of the connection between the incoming flow pipe (with a threaded structure) and the inlet pipe according to an embodiment of the present utility model;

[0028] Figure 5 The following schematically shows a structural diagram of an incoming flow pipe (with a threaded structure) according to an embodiment of the present utility model;

[0029] Figure 6 Schematically shows a cross-sectional structural diagram of a flow diversion assembly (a one-piece structure and a plate without mounting grooves) according to an embodiment of the present utility model;

[0030] Figure 7 Schematically shows a cross-sectional structural diagram of a flow diversion assembly (a one-piece structure and a plate with mounting grooves) according to an embodiment of the present utility model;

[0031] Figure 8 Schematically shows a cross-sectional structural diagram of a flow diversion assembly (plate with an inclination angle) according to an embodiment of the present utility model;

[0032] Figure 9 Schematically shows a structural diagram of a HVAC device according to an embodiment of the present utility model;

[0033] The reference numerals are as follows:

[0034] 1. HVAC equipment;

[0035] 1000, diversion assembly; 2000, first heat exchanger; 3000, second heat exchanger; 4000, compressor; 5000, refrigeration throttle valve; 6000, four-way valve;

[0036] 10. Shell; 111. Inflow hole; 103. Expansion chamber;

[0037] 20. Plate; 201. Diverter hole; 21. First plate; 22. Second plate; 202. Insertion hole; 25. Mounting slot;

[0038] 30. Diverter cone;

[0039] 200, first connecting pipe;

[0040] 301, inlet pipe; 3012, reduced diameter structure; 3013, side hole; 3014, first lumen; 3015, first lumen; 3016, transition lumen;

[0041] 302, incoming flow pipe; 3024, threaded structure; 30241, first threaded section; 30242, second threaded section; 3025, first straight pipe section; 3026, curved pipe section; 3027, second straight pipe section; 3028, necking structure. DETAILED DESCRIPTION

[0042] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0043] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0044] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0045] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," and the like. Such spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "below" another element or feature would then be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein are interpreted accordingly.

[0046] like Figures 1 to 9 As shown, Figure 2 Where D1 is the diameter of the first lumen 3014, D2 is the diameter of the incoming flow tube 302, and D3 is the axial length of the first lumen 3014. Figure 4 A in the middle represents the axial direction of the incoming flow pipe 302, Figure 5 Where L is the thread depth, W is the thread width, S is the thread distance, and P is the length of the first thread segment 30241. The first aspect of the present invention provides a diverter assembly 1000, comprising a housing 10, a plate 20, and a first connecting pipe 200. The housing 10 defines an expansion cavity 103, the expansion cavity 103 has an opening, and the housing 10 is further provided with an inflow hole 111 communicating with the expansion cavity 103; the plate 20 is mounted on the housing 10 and closes the opening, and the plate 20 is provided with a plurality of diverters on one side facing the expansion cavity 103. Hole 201, a plurality of insertion holes 202 are provided on the side of the plate body 20 away from the expansion cavity 103, the insertion holes 202 are connected with the expansion cavity 103 through the diversion hole 201, and the insertion holes 202 are coaxially arranged with the diversion hole 201, and the aperture of the insertion hole 202 is larger than the aperture of the diversion hole 203; the first end of the first connecting tube 200 is inserted into the insertion hole 202, the outer peripheral wall of the first connecting tube 200 is connected to the hole wall of the insertion hole 202, and the end face of the first end is connected to the part of the plate body 20 located between the diversion hole 201 and the insertion hole 202.

[0047] It can be understood that the shell 10 is a cylindrical structure, and a hemispherical, diamond-shaped or conical expansion chamber 103 is defined in the shell 10. One axial end of the expansion chamber 103 is open, and the other axial end is provided with an inflow hole 111. The inflow hole 111 is connected to the inlet pipe 301. The inlet pipe 301 can be coaxially arranged with the inflow hole 111, that is, the inlet pipe 301 is coaxially arranged with the shell 10. The inlet pipe 301 can be a cylindrical straight pipe structure or a straight pipe structure with a reduced diameter at one end, so that the connection between the inlet pipe 301 and the shell 10 is reduced in diameter to form a Venturi-type throat, which can further mix the fluid before entering the throat, and after being guided through the throat, it flows toward the center of the expansion chamber 103, thereby improving the uniformity of the diversion. The shape of the plate body 20 matches the opening and can be a circular plate structure. A plurality of diverter holes 201 are arranged in a circular array on the plate body 20, or a plurality of diverter holes 201 and a plurality of insertion holes are arranged in a ring-shaped manner and spaced apart. The first connecting pipe 200 can be inserted into the insertion hole to connect with each heat exchange tube of the heat exchanger. A flange can also be provided on the side of the plate body 20 away from the expansion cavity, so that the connection area between the first connecting pipe 200 and the plate body 20 is larger, thereby improving the reliability of the connection. The first connecting pipe 200 can be made of a stainless steel pipe or other high-rigidity pipe fitting, which is convenient for connection with the plate body 20 and will not produce rebound, thereby improving reliability.

[0048] The diversion assembly 1000 proposed in the first aspect of the present invention is to form a step structure between the insertion hole 202 and the diversion hole 021 by setting the insertion hole 202 on the plate body 20 to have a larger aperture than the diversion hole 201, so that the plate body 20 forms a step structure between the insertion hole 202 and the diversion hole 021. The first connecting pipe 200 connecting the heat exchanger can adopt a metal pipe with greater rigidity, so that the first connecting pipe 200 is not easy to rebound, and the first connecting pipe 200 can be inserted into the insertion hole 202, the surrounding wall of the first connecting pipe 200 can be connected to the hole wall of the insertion hole 202, and the end face of one end of the first connecting pipe 200 located in the insertion hole 202 can be connected to the step structure, thereby increasing the connection area between the first connecting pipe 200 and the plate body 20, making the connection between the first connecting pipe 200 and the plate body 20 more reliable.

[0049] In some embodiments of the present invention, the plate body 20 is an integrated structure.

[0050] It is understandable that the plate body 20 can be integrally stamped from a flat plate, so that the plate body 20 has good strength, reduces leakage points, and improves reliability.

[0051] In some embodiments of the present invention, the inner diameter of the first connecting pipe 200 is consistent with the aperture of the diversion hole 201 .

[0052] It is understood that the diameter of the diverter hole 201 is set according to the actual required flow rate to provide a flow distribution function. In this case, the inner diameter of the first connecting tube 200 can be set to be consistent with the diameter of the diverter hole 201, so that the specifications of the first connecting tube 200 do not affect the flow distribution function of the diverter hole 201. Specifically, the end of the first connecting tube 200 can be configured to be narrowed so that the inner diameter of the end of the first connecting tube 200 is consistent with the diameter of the diverter hole 201 to achieve the above structure.

[0053] In some embodiments of the present invention, the difference between the diameter of the inserting hole 202 and the diameter of the diversion hole 201 is H, and the wall thickness of the first connecting pipe 200 is M, where H>2M.

[0054] It is understood that the diverter hole 201 and the insertion hole 202 can be formed on the plate body 20 through a stamping process. The diameter of the insertion hole 202 is set to be larger than the sum of the diameter of the diverter hole 201 and twice the wall thickness of the first connecting tube 200. This allows the step structure between the insertion hole 202 and the diverter hole 201 to have a certain radial length. This allows the step structure to reliably support the first connecting tube 200, improve the reliability of the connection between the first connecting tube 200 and the plate body 20, facilitate the installation of the first connecting tube 200, and enable the use of a stainless steel tube with greater rigidity. In addition, the diverter hole 201 can be a straight hole with a constant diameter, or a gradually expanding hole with a diameter that gradually increases along the flow direction.

[0055] In some embodiments of the present invention, a coaxially arranged first lumen 3014 and a second lumen 3015 are formed in the inlet tube 301. The first lumen 3014 is connected to the inflow hole 111 through the second lumen 3015. The flow area of ​​the second lumen 3015 is smaller than the flow area of ​​the first lumen 3014.

[0056] It is understandable that the flow area of ​​the first lumen 3014 is greater than the flow area of ​​the second lumen 3015, so that the fluid entering the first lumen 3014 from the flow tube 302 is decelerated and fully mixed in the first lumen 3014, thereby improving the mixing uniformity of the refrigerant when the fluid is a gas-liquid two-phase refrigerant, thereby providing a diversion effect. The flow area of ​​the second lumen 3015 is reduced, so that a throat is formed between the first lumen 3014 and the expansion chamber 103, so that the mixed fluid flows from the second lumen 3015 to the middle of the expansion chamber 103, and is then diverted by the diverter cone 30 in the middle of the expansion chamber 103, thereby improving the diversion effect. Specifically, the first lumen 3014 and the second lumen 3015 can both be cylindrical structures, and a truncated cone transition chamber can be set between the two lumens to avoid sudden changes in flow resistance and improve circulation efficiency.

[0057] In some embodiments of the present invention, the expansion chamber 103 is a rotating body structure, and along the axial direction of the expansion chamber 103 , the cross section of the expansion chamber 103 is hemispherical, and along the flow direction of the inflow hole 111 , the diameter of the expansion chamber 103 gradually increases.

[0058] It is understood that the expansion chamber 103 can be a rotating body structure such as a truncated cone, a cone, or a hemisphere, and can be combined with the diverter holes 201 arranged at intervals along the circumference of the expansion chamber 103, as well as the inflow hole 111 and the diverter cone 30 arranged on the axis of the expansion chamber 103 to make the diversion more uniform. Specifically, the expansion chamber 103 can be hemispherical, having a spherical cavity wall, so that the flow resistance is smaller and the circulation efficiency is better. The inflow hole 111 can be arranged at the top of the sphere of the expansion chamber 103, and the diverter holes 201 are arranged at intervals along the circumference of the expansion chamber 103, and the connecting line of the multiple diverter holes 201 is arranged coaxially with the expansion chamber 103, so that after the fluid flows into the expansion chamber 103 from the inflow hole 111, it can flow evenly to each diverter hole 201, and after the flow rate is adjusted by the diverter hole 201, it flows from the first connecting pipe 200 to the heat exchanger.

[0059] In some embodiments of the present invention, a mounting groove 25 is provided at the outer edge of the plate body 20 facing the expansion cavity 103 . The mounting groove 25 is arranged around the axis of the inflow hole 111 , and the end of the shell 10 facing away from the inflow hole 111 is installed in the mounting groove 25 .

[0060] It can be understood that a mounting groove 25 surrounding the plate body 20 can be provided at the edge of the plate body 20 on one side facing the expansion cavity 103. The mounting groove 25 can be arranged in a ring shape and extend around the axis of the plate body 20, or the mounting groove 25 includes multiple parts, which are arranged at intervals along the circumference of the plate body 20. The shape of the mounting groove 25 matches the open part of the shell 10. The mounting groove 25 can be defined by a first plane that is annular and parallel to the radial direction of the plate body 20 and a second plane that is annular and parallel to the axial direction of the plate body 20. When the plate body 20 is installed, the second plane can be embedded in the expansion cavity 103 and abutted against the cavity wall of the expansion cavity 103. The first plane is then abutted against the end face of the open part of the shell 10 to achieve partial embedding and installation of the plate body 20 in the expansion cavity 103, and the open part of the shell 10 is matched and fixed with the mounting groove 25, which further improves the reliability of the connection between the plate body 20 and the shell 10.

[0061] In some embodiments of the present invention, the expansion chamber 103 has an open end that is truncated in a cone shape, and along the flow direction of the inflow hole 111, the diameter of the open end of the expansion chamber 103 gradually increases, and the plate body 20 is embedded and installed in the opening and adapted to the shape of the expansion chamber 103.

[0062] It can be understood that the opening of the expansion chamber 103 is in the shape of a truncated cone, with its small diameter end facing the inflow hole 111 and the large diameter end open, so that the expansion chamber 103 is in the shape of an inverted truncated cone, and the cavity wall of the expansion chamber 103 at the opening is annular and is set at an angle to the axial direction of the expansion chamber 103, and along the flow direction of the inflow hole 111, the cavity wall is inclined in the direction away from the axis of the expansion chamber 103, and the shape of the plate body 20 is adapted to the truncated cone portion of the expansion chamber 103, that is, the side wall of the plate body 20 is at an angle to the axial direction of the expansion chamber 103. The expansion cavity 103 is set at a certain degree, and along the flow direction of the inflow hole 111, the cavity wall is inclined in the direction away from the axis of the expansion cavity 103. The plate body 20 can be embedded in the opening during installation and cooperate with the frustum part of the expansion cavity 103. Since the cavity wall of the expansion cavity 103 is set at an angle relative to the axis, the cavity wall of the expansion cavity 103 can provide a certain support for the plate body 20, thereby improving the reliability of the connection between the plate body 20 and the shell 10. Specifically, the plate body 20 can be further fixed to the shell 10 by interference connection or welding.

[0063] In some embodiments of the present invention, the axial direction of the diverter hole 201 is set at an angle to the axial direction of the inflow hole 111, and along the flow direction of the diverter hole 201, the axial direction of the diverter hole 201 is inclined away from the axis of the inflow hole 111.

[0064] It is understood that since the plate body 20 is inclined at a certain angle relative to the axis of the inflow hole 111 and the expansion chamber 103, the diverter hole 201 can also be inclined at a certain angle relative to the axis of the inflow hole 111 and the expansion chamber 103 for ease of processing. Specifically, the angle between the axis of the diverter hole 201 and the axis of the expansion chamber 103 can be set to 5°, so that the openings of the diverter holes 201 on the side of the plate body 20 away from the expansion chamber 103 are more dispersed, thereby making the connection and installation between the first connecting tube 200 and the diverter hole 201 more convenient and easier to operate. In addition, the plate surface of the plate body 20 on the side away from the expansion chamber 103 can also be set to be conical, and the angle between the plate surface of the plate body 20 on the side away from the expansion chamber 103 and the radial direction of the expansion chamber 103 is 5°.

[0065] In some embodiments of the present invention, the plate body 20 includes a first plate body 21 and a second plate body 22 arranged opposite to each other, the first plate body 21 is arranged in the expansion cavity 103, the second plate body 22 is connected to the shell 10 and closes the opening, the first plate body 21 is provided with a plurality of diversion holes 201, the second plate body 22 is provided with a plurality of insertion holes 202, the insertion holes 202 are coaxially arranged with the diversion holes 201, the aperture of the insertion holes 202 is larger than the aperture of the diversion holes 201, the diversion assembly 1000 also includes a first connecting pipe 200, the first end of the first connecting pipe 200 is inserted into the insertion hole 202 and is connected to the diversion hole 201, and the end face of the first end is connected to the plate surface of the second plate body 22 on the side facing away from the expansion cavity 103.

[0066] It is understood that the plate body 20 can be composed of a first plate body 21 and a second plate body 22, which are separately arranged. The first plate body 21 is located in the expansion cavity 103 and is provided with a diverter hole 201 for adjusting the distribution flow. The diverter hole 201 can be a straight hole or a gradually expanding hole along the flow direction. The second plate body 22 can be fixedly connected to the first plate body 21 by welding or clamping, and the outer edge of the second plate body 22 is fixed to the housing 10 by clamping or welding. The second plate body 22 is provided with an insertion hole 202 for inserting one end of the first connecting tube 200 into the insertion hole 202 to achieve the connection between the first connecting tube 200 and the plate body 20. The first connecting tube 200 is connected to the expansion cavity 103 through the diverter hole 201. Specifically, the aperture of the insertion hole 202 can be set to be larger than the aperture of the diversion hole 201, so that a step structure is formed at the insertion hole 202 and the diversion hole 201, so that the end of the first connecting tube 200 after being inserted into the insertion hole 202 can abut against the plate surface of the first plate body 21. The first connecting tube 200 can be welded to the first plate body 21, and the connection between the peripheral wall of the first connecting tube 200 and the hole wall of the insertion hole 202 is coordinated to expand the connection area between the first connecting tube 200 and the plate body 20, thereby improving the reliability of the connection.

[0067] In some embodiments of the present invention, along the axial direction of the diverter hole 201, the thickness of the second plate body 22 is greater than or equal to 1.5 mm, the thickness of the first plate body 21 is L, the aperture of the diverter hole 201 is D, and the aperture of the insertion hole 202 is D, where D≥D+2L.

[0068] It is understood that the thickness of the second plate 22 can be optimized to a certain thickness, thereby increasing the axial length of the insertion hole 202 on the second plate 22 to a certain value, thereby ensuring a more reliable connection between the first connecting tube 200 and the insertion hole 202. Furthermore, the ratio between the diameter of the insertion hole 202 and the diameter of the diverter hole 201 can be optimized to ensure an appropriate plate surface area between the insertion hole 202 and the diverter hole 201, thereby facilitating the abutment and fixation of the end of the first connecting tube 200 against the plate surface. Specifically, this structure can expand the connection area between a rigid and thick metal tube, such as stainless steel, and the first plate 21.

[0069] In some embodiments of the present invention, along the flow direction of the diversion hole 201 , the ratio of the length of the installation groove to the aperture of the diversion hole 201 is greater than 0.5.

[0070] It is understandable that optimizing the length of the mounting groove so that the mounting groove has a certain depth makes the connection between the mounting groove and the housing more reliable.

[0071] In some embodiments of the present invention, one end of the inlet pipe 301 facing away from the shell 10 is closed, and the tube wall of the inlet pipe 301 is provided with a side hole 3013, which is connected to the first tube cavity 3014. The diversion component 1000 also includes an incoming flow pipe 302, one end of the incoming flow pipe 302 is connected to the inlet pipe 301 through the side hole 3013, and the other end of the incoming flow pipe 302 is used for fluid inflow, and the axial direction of the incoming flow pipe 302 is tangent to the circumferential direction of the inlet pipe 301.

[0072] It is understood that one end of the incoming flow pipe 302 is tangentially connected to the side wall of the inlet pipe 301, and the inlet pipe 301 and the distributor can be welded or integrally formed. One end of the inlet pipe 301 is a reduced diameter structure 3012 to facilitate insertion into the inflow hole 111. The incoming flow pipe 302 and the inlet pipe 301 can be welded to introduce the refrigerant into the distributor. The side hole 3013 can be set at the end of the inlet pipe 301 away from the distributor, and the diameter of the inlet pipe 301 can be set larger than the incoming flow pipe 302, so that after the refrigerant from the incoming flow pipe 302 enters the inlet pipe 301 tangentially, under the action of centrifugal force, the refrigerant forms an annular flow inside the inlet pipe 301, flows along the circumference of the inlet pipe 301, and flows spirally toward the inflow hole 111, allowing the vapor and liquid phases of the refrigerant to be fully mixed here, achieving uniform distribution of the vapor and liquid phases of the refrigerant, reducing flow resistance, and improving circulation efficiency.

[0073] In some embodiments of the present invention, a transition lumen 3016 is further formed in the inlet pipe 301 . The transition lumen 3016 is coaxially arranged between the first lumen 3014 and the second lumen 3015 . Along the flow direction of the fluid in the inlet pipe 301 , the flow area of ​​the transition lumen 3016 gradually decreases.

[0074] It can be understood that a transition lumen 3016 can be set between the first lumen 3014 and the second lumen 3015, and the transition lumen 3016 is in a truncated cone shape, and its flow area gradually decreases along the flow direction, so that the fluid from the first lumen 3014 enters the second lumen 3015 after passing through the transition lumen 3016. The provision of the transition lumen 3016 makes the fluid flow smoother and reduces the flow resistance.

[0075] In some embodiments of the present invention, the first lumen 3014 is cylindrical, the diameter of the first lumen 3014 is D1, the diameter of the incoming flow tube 302 is D2, and the ratio of D1 to D2 ranges from 2 to 5.

[0076] It is understood that the ratio of the diameter of the first lumen 3014 to the diameter of the incoming flow tube 302 can be optimized. By controlling the diameter of the first lumen 3014, the space in the first lumen 3014 is not too large compared to the size of the incoming flow tube 302, causing the fluid to flow slowly within the first lumen 3014 and reduce flow efficiency. Furthermore, the space in the first lumen 3014 is not too small compared to the size of the incoming flow tube 302, which shortens the fluid's residence time within the first lumen 3014 and causes it to flow out of the first lumen 3014 before achieving mixing. This increases the residence time of the gas-liquid two-phase refrigerant within the first lumen 3014, thereby improving the refrigerant mixing efficiency.

[0077] In some embodiments of the present invention, the first lumen 3014 is cylindrical, the axial length of the first lumen 3014 is D3, the diameter of the incoming flow tube 302 is D2, and the ratio of D3 to D2 ranges from 3 to 5.

[0078] It is understood that the ratio of the axial length of the first lumen 3014 to the diameter of the incoming flow tube 302 can be optimized. By controlling the axial length of the first lumen 3014, the space in the first lumen 3014 is not too large compared to the dimensions of the incoming flow tube 302, causing the fluid to flow slowly within the first lumen 3014 and reduce flow efficiency. Furthermore, the space in the first lumen 3014 is not too small compared to the dimensions of the incoming flow tube 302, which shortens the fluid's residence time within the first lumen 3014 and causes it to flow out of the first lumen 3014 before achieving mixing. This increases the residence time of the gas-liquid two-phase refrigerant within the first lumen 3014, thereby improving the refrigerant mixing efficiency.

[0079] In some embodiments of the present invention, the first lumen 3014 is cylindrical, the diameter of the first lumen 3014 is D1, the axial length of the first lumen 3014 is D3, and the ratio of D3 to D1 ranges from 2.5 to 0.6.

[0080] It is understood that the ratio of the axial length of the first lumen 3014 to its diameter can be optimized. By controlling the shape of the first lumen 3014, the space in the first lumen 3014 can be controlled to prevent it from being too wide or too long, thereby slowing the flow of fluid within the first lumen 3014 and reducing flow efficiency. Furthermore, the space in the first lumen 3014 can be controlled to prevent it from being too narrow or too short, thereby preventing the fluid from staying in the first lumen 3014 too short and flowing out of the first lumen 3014 before mixing is achieved. This increases the residence time of the gas-liquid two-phase refrigerant within the first lumen 3014, thereby improving the refrigerant mixing efficiency.

[0081] In some embodiments of the present invention, the diversion assembly 1000 also includes an incoming flow tube 302, one end of which is connected to the inlet pipe 301, and the other end of the incoming flow tube 302 is used for fluid inflow, and at least part of the inner wall of the incoming flow tube 302 has a threaded structure 3024, and the threaded structure 3024 is constructed to extend spirally along the axial direction of the incoming flow tube 302.

[0082] It can be understood that one end of the incoming flow pipe 302 may be in a constricted structure 3028 so as to be plugged into the end of the inlet pipe 301 away from the housing 10 to achieve communication between the incoming flow pipe 302 and the inlet pipe 301. A threaded structure 3024 is provided on the inner wall of the incoming flow pipe 302. The threaded structure 3024 extends in a spiral shape along the axial direction of the incoming flow pipe 302. The length of the threaded structure 3024 along the axial direction of the incoming flow pipe 302 may be consistent with the length of the incoming flow pipe 302, or may be partially connected to the incoming flow pipe 302. A bolt structure is set in the section. For example, the incoming flow pipe 302 can be set to a U-shaped or S-shaped pipe with a bend, so that the refrigerant can flow along a curved path in the incoming flow pipe 302, and collide with the pipe wall of the incoming flow pipe 302 when flowing to fully mix the gas-liquid two-phase refrigerant. According to the flow resistance design requirements, it can be seen that the straight pipe section of the incoming flow pipe 302 is set with a threaded structure 3024, so that the gas-liquid two-phase of the refrigerant can be fully mixed here, so as to achieve uniform distribution of the gas-liquid two-phase refrigerant, reduce flow resistance, and improve circulation efficiency.

[0083] In some embodiments of the present invention, at least a portion of the incoming flow pipe 302 is U-shaped, and the incoming flow pipe 302 includes a first straight pipe section 3025, a curved pipe section 3026, and a second straight pipe section 3027 connected in sequence. The first straight pipe section 3025 and the second straight pipe section 3027 are arranged in parallel, and the end of the first straight pipe section 3025 away from the curved pipe section 3026 is connected to the inlet pipe 301. The threaded structure 3024 includes a first threaded section 30241 and a second threaded section 30242. The first threaded section 30241 is arranged on the inner wall of the first straight pipe section 3025, and the second threaded section 30242 is arranged on the inner wall of the second straight pipe section 3027.

[0084] It is understood that the overall U-shaped extension of inlet flow tube 302 allows the gas-liquid two-phase refrigerant entering inlet flow tube 302 to collide with the tube wall at the bend of the U-shaped inlet flow tube 302, thereby causing the refrigerant to flow in different directions, thereby fully mixing the gas-liquid two-phase refrigerant and improving the uniformity of the refrigerant before the distributor. Furthermore, the U-shaped inlet flow tube 302 can minimize its vertical height, thereby reducing the occurrence of liquid and oil accumulation at the bottom of the heat exchanger located downstream of the diverter assembly 1000 under low-load cooling conditions of the HVAC equipment.

[0085] Specifically, the first straight pipe section 3025 and the second straight pipe section 3027 are straight pipe structures. The first straight pipe section 3025 and the second straight pipe section 3027 can be arranged in parallel. The curved pipe section 3026 is arc-shaped, and its two ends are respectively connected to the first straight pipe section 3025 and the second straight pipe section 3027, so that the incoming flow pipe 302 extends in a U shape. A first threaded section 30241 can be set on at least part of the pipe wall of the first straight pipe section 3025. The first threaded section 30241 can extend along the length direction of the first straight pipe section 3025, so that the refrigerant can produce annular mixed flow under the action of the guide groove of the first threaded section 30241 when flowing through the first straight pipe section 3025, so that the mixing of the gas-liquid two-phase refrigerant is more uniform. A second threaded section 30242 may be provided on at least a portion of the wall of the second straight pipe section 3027. The second threaded section 30242 may extend along the length of the second straight pipe section 3027. This allows the refrigerant to generate an annular mixed flow due to the flow guide grooves of the second threaded section 30242 as it flows through the second straight pipe section 3027, resulting in more uniform mixing of the gas-liquid two-phase refrigerant. The inner wall of the curved pipe section 3026 may be smooth, thereby reducing flow resistance, improving circulation efficiency, and facilitating processing.

[0086] In addition, the threaded structure 3024 can be formed by extruding the incoming flow tube 302 into a spiral structure protruding into the inner cavity of the tube through a mold, which makes processing convenient and low-cost, and can guide the refrigerant flowing through to produce annular vortex flow, thereby improving the uniformity of the refrigerant.

[0087] In some embodiments of the present invention, the thread depth of the thread structure 3024 is L, the thread width of the thread structure 3024 is W, and the ratio of W to L ranges from 0.5 to 2. The thread depth refers to the distance from the head of the thread teeth of the thread structure 3024 to the bottom of the thread teeth along the radial direction of the incoming flow tube 302, and the thread width refers to the length of the thread teeth along the axial direction of the incoming flow tube 302. By optimizing the ratio range of the thread depth and thread width of the thread structure 3024, the flow area of ​​the thread structure 3024 is optimized, and the thread structure 3024 has a certain depth, thereby improving the thread structure 3024's guiding effect on the refrigerant, thereby generating an annular vortex of the refrigerant and fully mixing the gas-liquid two-phase refrigerant.

[0088] In some embodiments of the present invention, the thread distance of the thread structure 3024 is S, the thread width of the thread structure 3024 is W, and the ratio of W to S ranges from 1 to 2.5. The thread distance refers to the distance between the heads of two adjacent threads along the axial direction of the incoming flow tube 302. By optimizing the ratio range of the thread distance to the thread width of the thread structure 3024, the flow area of ​​the thread structure 3024 is optimized, and the thread structure 3024 is neither too dense nor too sparse, thereby improving the flow guidance effect of the thread structure 3024 on the refrigerant, thereby generating an annular swirl of the refrigerant and fully mixing the gas-liquid two-phase refrigerant.

[0089] In some embodiments of the present invention, along the axial direction of the incoming flow pipe 302, the length of the first thread segment 30241 ranges from 30 mm to 50 mm;

[0090] And / or, along the axial direction of the incoming flow pipe 302, the length of the second thread segment 30242 ranges from 30 mm to 50 mm.

[0091] It can be understood that by optimizing the length of the first thread segment 30241 and the second thread segment 30242, the length of the first thread segment 30241 and the second thread segment 30242 is made appropriate, so that the thread structure 3024 is not too long to cause excessive flow resistance, affecting the circulation efficiency, and the length of the thread structure 3024 can achieve the basic effect of generating annular vortex for the refrigerant, so that the gas-liquid two-phase refrigerant is fully mixed.

[0092] In some embodiments of the present invention, along the axial direction of the incoming flow tube 302 , the ratio of the length of the first thread segment 30241 to the diameter of the incoming flow tube 302 ranges from 3 to 5;

[0093] And / or, the ratio of the length of the second thread segment 30242 to the diameter of the incoming flow tube 302 is in a range of 3 to 5.

[0094] It can be understood that by optimizing the range of the ratio of the first thread segment 30241 and the second thread segment 30242 to the diameter of the incoming flow tube 302, the length of the first thread segment 30241 and the second thread segment 30242 is appropriate, so that the thread structure 3024 is not too long to cause excessive flow resistance, affecting the circulation efficiency, and the length of the thread structure 3024 can achieve the basic effect of generating annular vortex for the refrigerant, so that the gas-liquid two-phase refrigerant is fully mixed.

[0095] In some embodiments of the present invention, along the flow direction of the incoming flow pipe 302 , the rotation direction of the first thread segment 30241 is the same as the rotation direction of the second thread segment 30242 .

[0096] Alternatively, along the flow direction of the incoming flow pipe 302, the first thread segment 30241 extends in a counterclockwise spiral, and the second thread segment 30242 extends in a clockwise spiral.

[0097] It is understood that the rotation direction of the first thread segment 30241 can be set to be the same as the rotation direction of the second thread segment 30242, so that the gas-liquid two-phase refrigerant is initially mixed after being guided by the second thread segment 30242 to generate a swirl, and then further mixed after being guided again by the first thread segment 30241 to generate a swirl, thereby improving the mixing uniformity of the refrigerant. The rotation directions of the first thread segment 30241 and the second thread segment 30242 can also be set opposite. Specifically, the first thread segment 30241 can be set to extend in a counterclockwise spiral, i.e., a left-hand spiral, and the second thread segment 30242 can be set to extend in a clockwise spiral, i.e., a right-hand spiral. The refrigerant generates a clockwise swirl when passing through the second thread segment 30242, and then generates a counterclockwise swirl when passing through the first thread segment 30241. The refrigerant is further mixed after rotating in both directions, thereby fully mixing the gas-liquid two-phase refrigerant and improving the mixing uniformity of the refrigerant before diversion.

[0098] In some embodiments of the present invention, the diverter assembly 1000 also includes a diverter cone 30, the large diameter end of the diverter cone 30 is connected to the plate body 20, the small diameter end of the diverter cone 30 is arranged in the expansion cavity 103, the diverter cone 30 is coaxially arranged with the inflow hole 111, and along the axial direction of the inflow hole 111, the distance between the small diameter end of the diverter cone 30 and the inflow hole 111 is L, the aperture of the inflow hole 111 is D1, and the ratio of L to D1 ranges from 0 to 5.

[0099] It is understood that the diverter cone 30 may be conical or pyramidal in shape, or may be a conical structure with a star-shaped cross-section. The diverter cone 30 may be formed separately and then welded to the side of the plate body 20 facing the expansion cavity 103. The diverter cone 30 may also be integrally formed with the plate body 20 and machined on the plate body 20 through a stamping process. The large-diameter end of the diverter cone 30 is connected to the plate body 20, and the small-diameter end of the diverter cone 30 may be disposed toward the inflow hole 111. The diverter cone 30 is coaxially disposed with the expansion cavity 103 and the inflow hole 111. The minimum distance between the small-diameter end of the diverter cone 30 and the inflow hole 111 along the axial direction of the inflow hole 111 is not too large. Specifically, the ratio of the diameter of the inflow hole 111 to the minimum distance between the small-diameter end of the diverter cone 30 and the inflow hole 111 along the axial direction of the inflow hole 111 is set to be between 0.5 and 1.5, so that the minimum distance between the small-diameter end of the diverter cone 30 and the inflow hole 111 along the axial direction of the inflow hole 111 is moderate. This allows the fluid entering the expansion chamber 103 from the inflow hole 111 to be immediately diverted by the diverter cone 30. This improves the diversion efficiency and shortens the length of the housing 10 in the axial direction of the expansion chamber 103, making the structure more compact.

[0100] In some embodiments of the present invention, the splitter cone 30 and the plate body 20 are an integrated structure.

[0101] It is understandable that the diverter cone 30 can be formed by stamping in the middle of the plate body 20, so that the structural strength is higher and the leakage risk is lower.

[0102] In some embodiments of the present invention, the splitter cone 30 may be a pyramid structure.

[0103] It can be understood that the diverter cone 30 is arranged in the expansion chamber 103, and the position of the inflow hole 111 is arranged relative to the top of the diverter cone 30, which can effectively guide the fluid to directly act on the central area of ​​the diverter cone 30. This arrangement ensures that the fluid first contacts the top of the diverter cone 30 after entering the expansion chamber 103, so that the fluid can be evenly dispersed to the different guide surfaces of the diverter cone 30. This not only reduces the turbulence of the fluid in the expansion chamber 103, but also ensures the consistency of the flow rate and flow rate of the fluid entering each guide surface. The diverter cone 30 has a pyramidal structure, and at least three guide surfaces on the diverter cone 30 are interconnected along its circumference and are arranged one-to-one with the diverter holes 201. This design ensures that each guide surface specifically guides the fluid into the corresponding diverter hole 201. Since the guide surfaces are continuously connected, they can effectively guide the fluid to flow downward from the top of the diverter cone 30, avoiding collision and turbulence of the fluid in the cavity, and ensuring uniform distribution of the fluid. After entering through the inlet 111, the fluid directly contacts the top of the diverter cone 30 and is then smoothly dispersed along the guide surface to each diverter hole 201. Due to the corresponding relationship between the guide surface and the diverter holes 201, the fluid flow rate received by each diverter hole 201 is relatively consistent, further improving the diversion uniformity of the system.

[0104] Alternatively, the diverter cone 30 has a star-shaped cone structure with a plurality of guide grooves arranged along its circumference.

[0105] It can be understood that the cross-section of the diverter cone 30 is triangular, and the diverter cone 30 has a plurality of guide grooves arranged along the circumference of the diverter cone 30, and the guide grooves extend along the height direction of the diverter cone 30. The radial cross-section of the guide grooves along the diverter cone 30 can be an arc surface, or a U-shape, and the guide grooves are arranged in a one-to-one correspondence with the diverter holes 201. Such a design ensures that each guide groove specifically guides the fluid into the corresponding diverter hole 201. Since the guide grooves are continuously connected, they can effectively guide the fluid to flow downward from the top of the diverter cone 30, avoiding collisions and turbulence of the fluid in the cavity, and ensuring uniform distribution of the fluid. After the fluid enters from the inlet 111, it directly contacts the top of the diverter cone 30, and is then smoothly dispersed to each diverter hole 201 along the guide grooves. Due to the corresponding relationship between the guide grooves and the diverter holes 201, the fluid flow received by each diverter hole 201 is relatively consistent, further improving the diversion uniformity of the system. Specifically, the small diameter end of the splitter cone 30 can be set in a hemispherical shape, so that the splitter cone 30 does not produce stress concentration, improves the strength of the structure, and reduces damage to the small diameter end of the splitter cone 30 under large flow rates.

[0106] The second aspect of the present invention provides a heating and ventilation system, comprising the flow diverter assembly 1000 of the first aspect of the present invention. The flow diverter assembly 1000 is connected to a first heat exchanger 2000 via a first connecting pipe 200 and to a refrigeration throttle valve 5000 via a second connecting pipe 300. The second connecting pipe includes an inlet pipe 301 and an inlet pipe 302 connected in sequence.

[0107] The HVAC equipment proposed in the second aspect of the present invention connects the heat exchanger and the diversion assembly 1000 through the first connecting pipe 200. The first connecting pipe 200 is reliably connected to the plate body 20 of the distributor 100. The aperture of the insertion hole 202 on the plate body 20 is larger than the aperture of the diversion hole 201, so that the plate body 20 forms a step structure between the insertion hole 202 and the diversion hole 201. The first connecting pipe 200 connecting the heat exchanger can adopt a metal pipe with greater rigidity, so that the first connecting pipe 200 is not easy to rebound, and the first connecting pipe 200 can be inserted into the insertion hole 202. The surrounding wall of the first connecting pipe 200 can be connected to the hole wall of the insertion hole 202, and the end face of one end of the first connecting pipe 200 located in the insertion hole 202 can be connected to the step structure, thereby increasing the connection area between the first connecting pipe 200 and the plate body 20, making the connection between the first connecting pipe 200 and the plate body 20 more reliable.

[0108] It is understandable that if Figure 9As shown, the HVAC equipment 1 provided in the second aspect of the present invention can be an air conditioner. The HVAC equipment 1 includes the aforementioned diversion assembly 1000, a first heat exchanger 2000, a second heat exchanger 3000, a compressor 4000, a refrigeration throttle valve 5000, and a four-way valve 6000. After the refrigerant is diverted from the diversion assembly 1000, it flows to the first heat exchanger 2000. The first heat exchanger 2000 absorbs heat from the refrigerant, which then absorbs heat from the environment and evaporates. The evaporated refrigerant flows to the compressor 4000 for pressurization, and the pressurized refrigerant is then delivered to the four-way valve 6000. The four-way valve 6000 is used to adjust the flow direction of the refrigerant to switch the air conditioner between cooling and heating modes.

[0109] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A diversion component, characterized in that: include: A shell defines an expansion cavity therein, the expansion cavity having an open opening, and the shell further comprises an inflow hole communicating with the expansion cavity; a plate body, mounted on the housing and closing the opening, the plate body having a plurality of diversion holes on a side facing the expansion cavity, and a plurality of insertion holes on a side facing away from the expansion cavity, the insertion holes being connected to the expansion cavity through the diversion holes, the insertion holes being coaxially arranged with the diversion holes, and the diameter of the insertion holes being larger than the diameter of the diversion holes; A first connecting tube, wherein the first end of the first connecting tube is inserted into the insertion hole, the outer peripheral wall of the first connecting tube is connected to the hole wall of the insertion hole, and the end face of the first end is connected to the portion of the plate body located between the diversion hole and the insertion hole.

2. The flow diversion assembly according to claim 1, characterized in that: The plate body is an integrated structure.

3. The flow diversion assembly according to claim 1, characterized in that: The inner diameter of the first connecting pipe is consistent with the aperture of the diversion hole.

4. The flow diversion assembly according to claim 1, characterized in that The difference between the diameter of the insertion hole and the diameter of the diversion hole is H, and the wall thickness of the first connecting pipe is M, wherein H>2M.

5. The flow diversion assembly according to claim 1, characterized in that: The expansion cavity is a rotating body structure. Along the axial direction of the expansion cavity, the cross section of the expansion cavity is hemispherical, and along the flow direction of the inflow hole, the diameter of the expansion cavity gradually increases.

6. The flow diversion assembly according to claim 1, characterized in that: An installation groove is provided at the outer edge of the plate body facing the expansion cavity. The installation groove is arranged around the axis of the inflow hole. The end of the shell facing away from the inflow hole is installed in the installation groove.

7. The flow diversion assembly according to claim 6, characterized in that: Along the flow direction of the inflow hole, the ratio of the length of the mounting groove to the aperture of the diversion hole is greater than 0.

5.

8. The flow diversion assembly according to claim 1, characterized in that: The expansion cavity has a truncated cone-shaped end with the opening, and the diameter of the expansion cavity with the opening gradually increases along the flow direction of the inflow hole. The plate body is embedded in the opening and adapted to the shape of the expansion cavity.

9. The flow diversion assembly according to claim 8, characterized in that: The axial direction of the diverter hole is arranged at an angle to the axial direction of the inflow hole, and along the flow direction of the diverter hole, the axial direction of the diverter hole is inclined in a direction away from the axis of the inflow hole.

10. The flow diversion assembly according to claim 1, characterized in that: The plate body includes a first plate body and a second plate body arranged opposite to each other, the first plate body is arranged in the expansion cavity, the second plate body is connected to the shell and closes the opening, the first plate body is provided with a plurality of diversion holes, the second plate body is provided with a plurality of insertion holes, and the end face of the first end is connected to the plate surface of the second plate body on the side facing away from the expansion cavity.

11. The flow diversion assembly according to any one of claims 1 to 10, characterized in that: The diverter assembly also includes a diverter cone, the large diameter end of the diverter cone is connected to the plate body, the small diameter end of the diverter cone is arranged in the expansion cavity, the diverter cone is coaxially arranged with the inflow hole, and along the axial direction of the inflow hole, the distance between the small diameter end of the diverter cone and the inflow hole is L1, the aperture of the inflow hole is D, and the ratio of L1 to D ranges from 0 to 5.

12. A HVAC equipment, characterized in that: Comprising the diversion assembly according to any one of claims 1 to 11.

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